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21 Years
experience
Emergency
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Expert Office & Commercial Cleaning Services in Watford
Established in 2005, Callver Cleaning Co has built a reputation as a trusted provider of professional cleaning services across Hertfordshire, London, and surrounding regions. Our team of fully trained, uniformed professionals delivers tailored solutions for office cleaning, commercial cleaning, communal areas, show homes, and post-build projects. With SMAS Worksafe accreditation and rigorous health and safety compliance, we prioritise client-specific needs through bespoke service plans.

Our commitment to excellence extends to washroom hygiene, clinical waste management, and sustainable practices, supported by a fleet of branded vehicles and COSHH-trained staff. Over two decades, we've evolved from a local enterprise to part of The Callver Group Ltd, maintaining our founding philosophy of exceptional service, transparent communication, and staff welfare.
Services
Office Cleaning Commercial Cleaning Communal Area Cleaning Show Home Cleaning Post-Build Cleaning Washroom Services Clinical Waste Management Window Cleaning Jet Washing Sanitary Unit Maintenance
Details
  • Year established: 2005
Highlights and features
  • 20 years of experience in commercial cleaning with SMAS Worksafe accreditation
  • Bespoke cleaning services tailored to client-specific requirements
  • Fully trained, uniformed professionals with COSHH and PPE compliance
  • Comprehensive health and safety protocols with site-specific risk assessments
  • Sustainable practices with environmentally conscious cleaning products
Associations and certifications
  • SMAS
What people say
Spotlessly clean Professional cleaners Flexible service Excellent communication Bespoke solutions
Services
Office Cleaning
Professional office cleaning maintaining hygienic workspaces with flexible scheduling. Our SMAS-accredited team uses COSHH-compliant products for daily or weekly cleans. Tailored solutions ensure sanitised environments across Hertfordshire and London.
Post-Build Cleaning
Specialist post-construction cleaning achieving showroom finishes for new developments. CSCS-certified teams handle dust removal, debris clearance, and final sanitisation. Available across South East England with site-specific risk assessments.
Washroom Services
Comprehensive washroom hygiene solutions including automatic air fresheners and FEMCare sanitary units. Fully licensed waste disposal with monthly servicing options. Available as standalone or integrated service.
Communal Area Cleaning
Dedicated cleaning for apartment complexes and commercial hubs. Includes bin store maintenance, jet washing, and touchpoint sanitisation. Electronic staff tracking ensures consistent service quality across Greater London.
Clinical Waste Management
Safe disposal of sharps, PPE, and biohazardous materials. HTM 07-01 compliant service with colour-coded containers and documented waste tracking. Available for healthcare and veterinary facilities.
People
Callum Oliver
Founder
Co-founder of Callver Cleaning Co since 2005, overseeing operational growth from local enterprise to multi-county service provider. Champion of staff welfare and sustainable cleaning practices.
Anna Rendall
Client Relations Director
Manages client partnerships with 15+ years' experience in property management. Ensures service alignment with client needs across residential and commercial contracts.
Questions
What areas do you cover?
We serve Watford, Hertfordshire, London, and surrounding counties including Essex, Buckinghamshire, and Bedfordshire.
Are you SMAS accredited?
Yes, we hold SMAS Worksafe accreditation with rigorous health and safety compliance for commercial cleaning.
Do you offer emergency cleaning services?
Yes, we provide emergency cleaning call-outs with 24/7 availability for urgent requirements.
What cleaning specialisations do you have?
We specialise in office cleaning, post-build sparkle cleans, communal area maintenance, and clinical waste management.
How do you ensure cleaning quality?
Through electronic staff management, site-specific risk assessments, and regular COSHH-compliant product training for our team.
Can you handle large commercial contracts?
Yes, we service major clients including leisure centres, vehicle showrooms, and new build developments across six counties.